Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0980bc956750da4…

MALICIOUS

PDF

71.6 KB Created: 2021-09-26 21:30:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 630f7d4406acb627001fb133df500d1a SHA-1: 62e1191d4c18bfb091253f5f1591dc9f5c409e6b SHA-256: f0980bc956750da46588ccbf596a3574272b924814d3a4c2b3e4b57b2a6c5a15
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF was flagged by ML classifiers and ClamAV as malicious, indicating it is likely a phishing or malware distribution tool. The file contains a link farm pointing to numerous domains, many of which are hosted on compromised CMS platforms or disposable hosting, suggesting an attempt to obscure the ultimate destination. The primary purpose appears to be directing users to potentially malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://crewmak.ru/uplcv?utm_term=space+jam+new+legacy+online PDF link annotation
    • http://joy05.com/_UploadFile/Images/file/34280030678.pdfIn PDF document text
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/161306f5ca886e---gibesokeneminogunaf.pdfIn PDF document text
    • http://mtecommerce.it/public/news/file/53684089599.pdfIn PDF document text
    • http://www.gamylai.vn/uploads/files/6155566294.pdfIn PDF document text
    • http://ms-beauty.com/ckfinder/userfiles/files/sovosax.pdfIn PDF document text
    • http://phuquytravel.com/nguyenvanlinh/files/8039819629.pdfIn PDF document text
    • http://szzxwx.com/Upload/Upload/file/20219121747151350.pdfIn PDF document text
    • https://www.syria-report.com/sites/all/libraries/ckfinder/userfiles/files/64907257055.pdfIn PDF document text
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614fef168b64a---29732416957.pdfIn PDF document text
    • http://lovesenergy.com/file/20494701711.pdfIn PDF document text
    • http://gekon.net/userfiles/file/karofe.pdfIn PDF document text
    • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/dbcc65b8145d527bc9811921c3f4b3d6/fudimapedaro.pdfIn PDF document text
    • http://mt-filtration.com/uploaded/file/143334727614e6029824f6.pdfIn PDF document text
    • https://adamant54.ru/userfiles/files/13140149555.pdfIn PDF document text
    • http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142b5a7b69ce---demovujoxipid.pdfIn PDF document text
    • http://thietbikhachsanvinhhung1.com/upload/files/bobuzej.pdfIn PDF document text
    • http://motivationandmomentum.net/ci/userfiles/files/zarofomawobuguz.pdfIn PDF document text
    • https://mr-alian.com/upload/ckfinder/files/53619941035.pdfIn PDF document text
    • https://2winit.com/Files/files/13629726602.pdfIn PDF document text
    • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134b0f9b0901---wulubelutuk.pdfIn PDF document text
    • https://zifu-tech.com/app/webroot/userfiles/files/sufevunaje.pdfIn PDF document text
    • https://shiokuda2.com/contents/files/68838108137.pdfIn PDF document text
    • http://digjamaica.com/app/webroot/files/47112863015.pdfIn PDF document text
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1614dcfbf779b7---11912405492.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b2bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2BD 10756 bytes
SHA-256: 1b1ca1f7c1a8178e52002c9d5ab2f5e25dc6ef82aee19e6bd6733bdb2333cc76
font_01_sfnt_off0000cb81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB81 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e393.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE393 17528 bytes
SHA-256: d046300a7cc50fa339eae23e99ccbeff8734195c1261bea50e5a6c382c908365

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